[mon] meilleur ami
[my] best friend [m]
[ma] meilleure amie
[my] best friend [f]
un ami/une amie
a friend [m/f]
sortir
to go out
se faire des amis
to make friends
faire la connaissance de
to get to know
connaitre
to know [a person]
savoir
to know [a thing or concept]
rencontrer
to meet [deliberately or by chance]
croiser
to meet [run in to]
se disputer
to argue
se presenter
to introduce oneself